Dispositions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notes Assumed	$ 75	$ 0	$ 0
PAC Business Annual Sales		370
HAI JV Disposition [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition purchase price	136
HAI Cash	2
Proceeds from the dispositions	61
Notes Assumed	75
HAI Gain on Disposition	120
PAC Disposition [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
gross cash consideration	226
Liabilities transferred, net of cash	6
PAC post closing adjustment to purchase price	1
PAC Gain on Disposition	120
Pre-tax Income of Affiliate	$ 14	$ 15	$ 10